First Quarter Moon
Saturday, 20 September 2121 · 00:25 local in London
2121-09-19 23:25 UTC · Europe/London
First Quarter Moon occurs at 00:25 local time in London on 20 September. Half of the visible disc is lit, and the terminator cuts across the middle. Long shadows make craters along the dividing line stand out.
Moon altitude
-16°
At the exact phase
Illumination
50%
First Quarter
Local date
20 Sep
2121
Viewing tips
- Look along the terminator for the strongest crater shadows.
- The Moon is highest in the evening during this phase.
- Binoculars are enough to see major craters and maria.
Visibility, honestly
Below the horizon at the exact moment — look near moonrise or moonset.
A phase is a global instant; whether it is above your horizon depends on location. Weather is not included here. Check the tonight outlook for cloud cover and a viewing score. No eclipse or conjunction claim is made on this page.
Phase times from Astronomy Engine. Rise/set and altitude use atmospheric refraction. Method
First Quarter · 50% lit
Phase at 00:25 local · NASA LRO surface
Next moonrise
15:49
Next moonset
23:25
Next events
Calendar →Sept 2121
26
Full Moon
Below horizon17:29 local · Fri, Fri 26 Sept · Moon -7°
Oct 2121
3
Last Quarter Moon
Above horizon12:43 local · Fri, Fri 3 Oct · Moon 20°
Oct 2121
11
New Moon
Not visible16:25 local · Sat, Sat 11 Oct · Moon 9°
Oct 2121
19
First Quarter Moon
Below horizon11:32 local · Sun, Sun 19 Oct · Moon -30°